https://devzone.nordicsemi.com/f/nordic-q-a/74023/how-to-change-pin-settings-directly-in-the-registerI want to change the GPIO settings for the pin P1.08 but in the register description (nRF52840_PS_v1.2.pdf) there are only the names and offsets for the pins from P0.00 to P0.31. - Where can I change the Instance from P0 to P1 and how can I write thisen-USTelligent Community 13Thu, 15 Apr 2021 11:46:31 GMThttps://devzone.nordicsemi.com/thread/305075?ContentTypeID=1Thu, 15 Apr 2021 11:46:31 GMT137ad170-7792-4731-bb38-c0d22fbe4515:4971d9b5-ca74-4429-b0a9-ce7ff5b91a29J&#248;rgen Holmefjord<p>Hi,</p> <p>The nRF52840 have two instances of the GPIO peripheral, P0 with pins from 0-31, and P1 with pins from 0-15.&nbsp;</p> <p>If you want to write to the pins on P1, you should use the P1 instance, e.g. for P1.08:</p> <p><pre class="ui-code" data-mode="text">NRF_P1-&gt;PIN_CNF[8] = ...;</pre></p> <p>NRF_GPIO is mapped to the base address of P0, and cannot be use for interfacing pins on PORT P1.</p> <p>Best regards,<br />Jørgen</p><div style="clear:both;"></div>